1.	Simplify 1 Simplify the following expression: $$ 2\times2(-2) - \left(1(-2) + -2\times6\right) $$ Correct Answer $$ 6$$ or 6.00000

2.	Simplify 2 Simplify the following expression: $$ \frac{4\times5 + -1 - -3}{2(-2)(-3)} $$ Correct Answer $$ \frac{11}{6}$$ or 1.83333

3.	Fractions 1 Simplify the following expression: $$ \frac{-5}{5} - \frac{2}{6} $$ Correct Answer $$ \frac{-4}{3}$$ or -1.3333333333333333

4.	Fractions 2 Simplify the following expression: $$ \frac{3}{2}\frac{-5}{4} $$ Correct Answer $$ \frac{-15}{8}$$ or -1.875

5.	Significant figures 1. Write the following to 2 significant figures: 111.93203 Correct Answer 110 or $$1.1\times10^{2}$$ 2. Write the following to 3 significant figures: 290.03033 Correct Answer 290 or $$2.90\times10^{2}$$

6.	Standard Form 1. Write the following in standard form to 4 significant digits: 19.1863 Correct Answer $$1.919\times10^{1}$$ 2. Write the following in standard form to 5 significant digits: 31940.1 Correct Answer $$3.1940\times10^{4}$$

7.	Significant figures 1. Write the following in preferred standard form to 2 significant digits: 2690 Correct Answer $$2.7\times10^{3}$$ 2. Write the following in preferred standard form to 5 significant digits: 0.0000004138064 Correct Answer $$413.81\times10^{-9}$$

8.	Simplify 2 Simplify the following expression: $$ \frac{-2 + 2 - \frac{5}{3}}{{\left(2 + 2\right)}^{2}} $$ Correct Answer $$ \frac{-5}{48}$$ or -0.104167

9.	Simplify 1 Simplify the following expression: $$ {\left(-6 + -3\right)}^{2} - \left(-6 + 5\right)\left(-5 + -4\right) $$ Correct Answer $$ 72$$ or 72.0000

10.	Simplify 2 Simplify the following expression: $$ 2\frac{3}{5}\left(1\times4 - (-4)\right) $$ Correct Answer $$ \frac{48}{5}$$ or 9.60000